Kick the tires and light the fires to 325 degrees.
Mix the flour and sugar then cut the butter in.
Add the lemon zest.
Or, continue on with the filling. Mix the sugar, baking soda and flour together.
Whip the eggs and one yolk in a bowl, add the lemon juice and rind, then add the dry ingredients in.
I added the extra yolk to make the filling more creamy.
Pour the filling on the crust. Bake in a 325 degree oven until the middle is set. The lower temperature makes the top end up a lot less brown, as most recipes tell you at the end to cover the too-browned top with icing sugar.
Recipe by The Kitchen Magpie at http://www.thekitchenmagpie.com/lemon-bars-2/